Author

Ana Bras

3 papers indexed here

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Open access Sep 2026

Degradation mechanisms of bio-enhanced geopolymers for acid-resistant sewer infrastructure

The long-term deterioration of sewer infrastructure in acidic environments presents a significant challenge for water utilities, as traditional cementitious materials tend to degrade rapidly when exposed to biogenic and industrial acids. To address this, this study investigates the durability of fly ash-based geopo...

Mehrdad Ameri Vamkani, Z. Yahya, J. I. Ahuir-Torres et al. · Scientific Reports · 0 citations

Open access Sep 2026

Cold‐formed steel beam profiles for lightweight modular floor systems: A numerical study

Modular steel buildings are increasingly utilised due to their rapid construction timelines and lower carbon footprint. However, transportation and lifting challenges associated with the high self‐weight of modules remain a critical constraint. Floor systems are estimated to contribute around 30% of the total module we...

Farhan Ahmed, M. Gkantou, G. Nikitas et al. · ce/papers · 0 citations

Open access Aug 2026

Durability assessment of bio-modified geopolymer concrete in simulated sewage environments

Sewer infrastructure worldwide is ageing beyond its designed lifespan, rendering it increasingly vulnerable to biogenic sulphuric acid corrosion, cracking, and structural collapse. Geopolymer concrete represents a promising sustainable alternative to ordinary Portland cement in such aggressive environments; however, it...

Mehrdad Ameri Vamkani, Z. Yahya, M. Gkantou et al. · Materials Structure · 0 citations